Hundreds of striking hospital cleaners, porters and domestics who work for Medirest in Southampton have vowed to bolster their 60-hour strike this week with a further walkout next week.
The low paid workers are demanding NHS terms and conditions that were promised under the Agenda for Change agreement four years ago.
Bosses are pleading poverty and refusing normal rates of sick pay.
Compass, Medirest’s parent company, made £800 million profit last year.
The long running dispute involves workers in Southampton, High Wycombe and Amersham.